for simplicity, try to use hardware raid, e.g. created in bios. use either RAID 0 (striping, more speed but lose on drive, loose them all) or RAID 1 (mirroring, gives redundancy)
On Sat, Dec 29, 2012 at 3:42 PM, Paul Gear <[email protected]> wrote: > On 12/29/2012 12:36 PM, Tom Sparks wrote: > > I am looking at setup a RAID > > what is the simplest setup? > > > RAID 1 is recommended for boot disks. My preferred setup is to set up all > boot disks (usually 2, but i've been known to go as high as 4) as follows: > > 1. primary partition, 1 GB or so, Linux RAID partition (type 0xFD in > fdisk, known as physical volume for RAID in the server/alternate > installer). Once these have been combined into a RAID partition (usually > /dev/md0), i create an ext3 filesystem for /boot on it. > > 2. primary or logical partition, rest of the disk, Linux RAID. Once these > have been combined into a RAID partition (usually /dev/md1), i create an > LVM physical volume (PV) on this, create a volume group (VG) named for the > host and a sequence number (e.g. myserv0). Then you can create logical > volumes (LVs) in the VG that act like physical partitions, but can be moved > and grown as needed. > > 3. LVs in the root VG: > > - lv00 4GB swap > - lv01 8GB+ / > - lv02 8GB+ /var > - rest of VG can be allocated as desired, but often it goes in /home > > It's not required to have a separate /boot nowadays, but i prefer it > because it has been very stable and trouble-free for me for many years. I > have an idea that the Ubuntu installer nowadays might even have a canned > configuration that sets up RAID 1 + LVM. But don't quote me on that one. > > I've got a bit more at my wiki (hasn't been updated in a while, though): > > - http://linuxman.wikispaces.com/search/view/raid > - http://linuxman.wikispaces.com/Software+RAID+troubleshooting > - http://linuxman.wikispaces.com/Recovering+from+a+RAID+drive+failure > - http://linuxman.wikispaces.com/filesystem+layers+overview > > I'm sure there are better guides than mine if you care to search, but i > haven't found anything like the filesystem layers overview elsewhere. > > If you have any troubles, jump on IRC in #ubuntu-au and ping me > (blahdeblah) and i'll see what i can do to help. > > Regards, > Paul > > > -- > ubuntu-au mailing list > [email protected] > https://lists.ubuntu.com/mailman/listinfo/ubuntu-au > >
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